171377216 has 14 divisors (see below), whose sum is σ = 340076790. Its totient is φ = 85688576.

The previous prime is 171377191. The next prime is 171377257. The reversal of 171377216 is 612773171.

It can be written as a sum of positive squares in only one way, i.e., 161391616 + 9985600 = 12704^2 + 3160^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1338821 + ... + 1338948.

Almost surely, 2^171377216 is an apocalyptic number.

171377216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

171377216 is a deficient number, since it is larger than the sum of its proper divisors (168699574).

171377216 is an equidigital number, since it uses as much as digits as its factorization.

171377216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2677781 (or 2677771 counting only the distinct ones).

The product of its digits is 12348, while the sum is 35.

The square root of 171377216 is about 13091.1120994360. The cubic root of 171377216 is about 555.4577464315.

The spelling of 171377216 in words is "one hundred seventy-one million, three hundred seventy-seven thousand, two hundred sixteen".